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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2006-04-27 - 2006-11-03
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
Qualifier:
according to guideline
Guideline:
other: EN ISO 11357-3 (Plastics-Differential scanning Calorimetry- Part 3 Determination of Temperature and enthalpy of melting and crystallization)
Deviations:
no
GLP compliance:
no
Other quality assurance:
other: ISO 9001
Type of method:
thermal analysis
Specific details on test material used for the study:
- Name of test material (as cited in study report): 2-Hydroxyethyl methacrylate
- Physical state: liquid
- Analytical purity: 98.87%
- Lot/batch No.: 1035092208
- Stability under test conditions: stable
- Storage condition of test material: between room temperature and 4 °C
Remarks on result:
other: No melting point was detected but an endothermic Cp-step at -99 °C, characteristic for a glass transition, that means the test item solidifies amorphously.

The DSC-curve shows no melting peak, but an endothermic Cp-step at -99 °C, characteristic for a glass transition, that means the test item solidifies amorphously. An endothermic peak at 215 °C with an extrapolated onset temperature of 213 °C at atmospheric pressure indicates the boiling point.

Conclusions:
No melting point was detected. The DSC-curve shows no melting peak, but an endothermic Cp-step at -99 °C, characteristic for a glass transition, that means the test item solidifies amorphously. An endothermic peak at 215 °C with an
extrapolated onset temperature of 213 °C at atmospheric pressure indicates the boiling point.
Executive summary:

The melting point of 2-Hydroxyethyl methacrylate was tested acc. OECD 102 by DSC method. No melting point was detected.  The DSC-curve shows no melting peak, but an endothermic Cp-step at -99 °C, characteristic for a glass transition, that means the test item solidifies amorphously. An endothermic peak at 215 °C with an extrapolated onset temperature of 213 °C at atmospheric pressure indicates the boiling point.

Description of key information

The melting point of HEMA is -99 °C at 1013 hPa (OECD Guideline 102/EU Method A.1; differential scanning calorimetry).

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-99 °C

Additional information